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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __LAYER_H__
#define __LAYER_H__
#include "drawable.h"
#include "boundary.h"
#include "channel.h"
#include "temp_buf.h"
#include "tile_manager.h"
#define APPLY 0
#define DISCARD 1
typedef enum
{
WhiteMask,
BlackMask,
AlphaMask
} AddMaskType;
/* structure declarations */
#define GIMP_LAYER(obj) GTK_CHECK_CAST (obj, gimp_layer_get_type (), GimpLayer)
#define GIMP_LAYER_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gimp_layer_get_type(), GimpLayerClass)
#define GIMP_IS_LAYER(obj) GTK_CHECK_TYPE (obj, gimp_layer_get_type())
#define GIMP_LAYER_MASK(obj) GTK_CHECK_CAST (obj, gimp_layer_mask_get_type (), GimpLayerMask)
#define GIMP_LAYER_MASK_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gimp_layer_mask_get_type(), GimpLayerMaskClass)
#define GIMP_IS_LAYER_MASK(obj) GTK_CHECK_TYPE (obj, gimp_layer_mask_get_type())
typedef struct _GimpLayer GimpLayer;
typedef struct _GimpLayerClass GimpLayerClass;
typedef struct _GimpLayerMask GimpLayerMask;
typedef struct _GimpLayerMaskClass GimpLayerMaskClass;
typedef GimpLayer Layer; /* convenience */
typedef GimpLayerMask LayerMask; /* convenience */
guint gimp_layer_get_type (void);
guint gimp_layer_mask_get_type (void);
/* Special undo types */
typedef struct _layer_undo LayerUndo;
struct _layer_undo
{
Layer * layer; /* the actual layer */
int prev_position; /* former position in list */
Layer * prev_layer; /* previous active layer */
int undo_type; /* is this a new layer undo */
/* or a remove layer undo? */
};
typedef struct _layer_mask_undo LayerMaskUndo;
struct _layer_mask_undo
{
Layer * layer; /* the layer */
int apply_mask; /* apply mask? */
int edit_mask; /* edit mask or layer? */
int show_mask; /* show the mask? */
LayerMask *mask; /* the layer mask */
int mode; /* the application mode */
int undo_type; /* is this a new layer mask */
/* or a remove layer mask */
};
typedef struct _fs_to_layer_undo FStoLayerUndo;
struct _fs_to_layer_undo
{
Layer * layer; /* the layer */
GimpDrawable * drawable; /* drawable of floating sel */
};
/* function declarations */
Layer * layer_new (int, int, int, int, char *, int, int);
Layer * layer_copy (Layer *, int);
Layer * layer_ref (Layer *);
void layer_unref (Layer *);
Layer * layer_from_tiles (void *, GimpDrawable *, TileManager *, char *, int, int);
LayerMask * layer_add_mask (Layer *, LayerMask *);
LayerMask * layer_create_mask (Layer *, AddMaskType);
Layer * layer_get_ID (int);
void layer_delete (Layer *);
void layer_apply_mask (Layer *, int);
void layer_translate (Layer *, int, int);
void layer_add_alpha (Layer *);
void layer_scale (Layer *, int, int, int);
void layer_resize (Layer *, int, int, int, int);
BoundSeg * layer_boundary (Layer *, int *);
void layer_invalidate_boundary (Layer *);
int layer_pick_correlate (Layer *, int, int);
LayerMask * layer_mask_new (int, int, int, char *,
int, unsigned char *);
LayerMask * layer_mask_copy (LayerMask *);
void layer_mask_delete (LayerMask *);
LayerMask * layer_mask_get_ID (int);
LayerMask * layer_mask_ref (LayerMask *);
void layer_mask_unref (LayerMask *);
/* access functions */
unsigned char * layer_data (Layer *);
LayerMask * layer_mask (Layer *);
int layer_has_alpha (Layer *);
int layer_is_floating_sel (Layer *);
int layer_linked (Layer *);
TempBuf * layer_preview (Layer *, int, int);
TempBuf * layer_mask_preview (Layer *, int, int);
void layer_invalidate_previews (int);
/* from drawable.c */
Layer * drawable_layer (GimpDrawable *);
LayerMask * drawable_layer_mask (GimpDrawable *);
/* from channel.c */
void channel_layer_alpha (Channel *, Layer *);
void channel_layer_mask (Channel *, Layer *);
#endif /* __LAYER_H__ */
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